What is CVE-2023-1777?

CVE-2023-1777 is a medium-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 6.5/10. Published 2023-03-31.

How severe is CVE-2023-1777?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Information disclosure in Mattermost

CVE-2023-1777

Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.

Vulnerability class: Information Disclosure

EPSS: 0.005 (42.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Mattermost — versions 6.3.0, 7.8.1, 7.7.2
Mattermost Mattermost_server — versions 7.7.1, 7.8.0

Weakness classification (CWE)

CWE-200 — Information Disclosure
CWE-668 — Exposure of Resource to Wrong Sphere

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-1777?: CVE-2023-1777 is a medium-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 6.5/10. Published 2023-03-31.
How severe is CVE-2023-1777?: Medium severity. CVSS v3 base score is 6.5 out of 10.